THE REMOTE BUCKLER FERN. 
71 
The venation consists in the larger lobes of a 
flexnous primary midvein from which alternate venules 
proceed towards the serratures, sometimes branched, 
the sori being situated midway on the simple venules 
and close above the fork upon the branches. In the 
smaller pinnules the vein bears a sorus midway on its 
lowest anterior venule, so that a row of sori is formed 
on each side of, and at a little distance from, the 
principal vein. The basal lobes often bare two or three 
other sori, and are traversed by a series of alternate 
simple venules. 
The fructification occupies the whole back of the 
frond, from base to apex. The sori are prominent 
and distinct, in two series, near the vein of the smaller 
pinnules and on the lobes of the larger. Indusium 
persistent, reniform, indistinctly erose-dentate (irregu- 
larly toothed) on the margin, not glandular. Spore- 
cases roundish obovate. Spores oblong, granulated, 
the majority abortive. 
